8th
grade

Science, Physics, Chemistry

53%

accuracy

579

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3 years

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1. Multiple Choice
20 seconds
1 pt
Which one is the polluting waste generated by electroplating factories?
Used up electrodes
Electrolytes
Corroded Metals
2. Multiple Choice
20 seconds
1 pt
When acidified water is electrolysed using carbon electrodes. What is produced at (+) and (-) electrodes.
(+) - Oxygen; (-) - Hydrogen
(+) - Oxygen; (-) - Carbon
(+) - Hydrogen (-) - Oxygen
3. Fill in the Blank
30 seconds
1 pt
LED stands for
4. Multiple Choice
20 seconds
1 pt
Select the poor conductors of electricity
Honey
Plastic
Vinegar
Distilled Water
5. Multiple Choice
20 seconds
1 pt
We can electroplate plastic on iron.
True
False
6. Multiple Choice
20 seconds
1 pt
To electroplate silver on Copper jewellery, the electrolyte that can be used is:
Copper Sulphate
Silver Nitrate
Ammonium Chloride
Sodium Chloride
7. Multiple Choice
20 seconds
1 pt
In a conducting liquid electricity is conducted with the help of :
Proton
Neutron
Electron
Ions
8. Multiple Choice
20 seconds
1 pt
During electrolysis the positively charged ions travel towards Cathode.
True
False
9. Fill in the Blank
30 seconds
1 pt
During electroplating ________ (electrode) reduces in size and ________(electrode) increases in size.
10. Multiple Choice
20 seconds
1 pt
Bicycle bells and wheel rims are electroplated with which metal?
Tin
Nickle
Chromium
Silver
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